-5.36% is the change from 168 to 159
Calculation steps:
[( 159 - 168 ) ÷ 168] x 100 = -5.36%
Formula
Percentage change = [(159 - 168) / 168] x 100
Subtract the new number by the original number
159 - 168 = -9
-9 ÷ 168 = -0.05357142857142857
-0.05357142857142857 x 100 = -5.36%